ARCAMOY specializes in the development and offer high quality/technology of clip on sunglasses. Our goal is : To give you perfect products and explore the beautiful scenery. Product Features : 1. Clip-on Sunglasses : Clip-on and flip up design for sport and outdoor activities lovers. You can easily fit it over your prescription eyeglasses, our invisible clip design looks more natural and relaxing. 2. TAC Polarized lens : High impact resistant, more flexible and durable. Anti-glare lens can eliminate reflected and scattered glares, offer you a comfortable and HD vision. 3. UV 400 Protection : 99.8% block UVA and UVB harmful UV rays, to protect your eyes always. 4. A nice leather case is available for each clip on sunglasses, portable for your use and storage. Product Specifications : -> Clip Material : Metal & TR90 plastic -> Lens Material : UV400 TAC polarized -> Lens Size : 56mm X 52mm ( 2.2in X 2.0in) Product Warranty : ARCAMOY provide a replacement or refund of ALL products within the 60-day warranty period, and lifetime customer support.